I have two models

class Manager(models.Model):
name = models.CharField(max_length=250)

def __str__(self):
    return self.name

class Project(models.Model):
title = models.CharField(max_length=250, null=True, blank=True)
work_statement = models.TextField(null=True, blank=True)
contract_id = models.CharField(max_length=250, null=True, blank=True)
note = models.TextField(null=True, blank=True)
customer = models.CharField(max_length=250, null=True, blank=True)
#executer = models.ManyToManyField(Manager)
deadline = models.DateTimeField(null=True, blank=True)

So there is logic I want Model Project to has several managers as executers but not all of them how can i do it?

so for example: Project "N" can include two managers for execution

i know that this way is not correct

class Project(models.Model):
title = models.CharField(max_length=250, null=True, blank=True)
work_statement = models.TextField(null=True, blank=True)
contract_id = models.CharField(max_length=250, null=True, blank=True)
note = models.TextField(null=True, blank=True)
customer = models.CharField(max_length=250, null=True, blank=True)
executer1 = models.ForeignKey(Manager)
executer2 = models.ForeignKey(Manager) 
deadline = models.DateTimeField(null=True, blank=True)

CodePudding user response：

you must use manyToMany

Read the following documents

djangoproject

sankalpjonna

CodePudding user response：

You can use ManyToMany field with through. For example in your case, you can use the following code:

class Manager(models.Model):
    name = models.CharField(max_length=250)

    def __str__(self):
        return self.name

class Project(models.Model):
    ...
    executer = models.ManyToManyField(Manager, through='Membership')

class Membership(models.Model):
    manager = models.ForeignKey(Manager)
    project = models.ForeignKey(Project)
    role = models.CharField()  # or a foreignkey to Role model